请教一下，谁知道怎样编程控制打印机打印照片？ 用 vc, python 为佳，多谢

[hfeeki]

请教一下，谁知道怎样编程控制打印机打印照片？ 用vc, python为佳，多谢
操作系统是windows

[hfeeki]

假设只提供一个图片文件的全路径名，怎样开发一个把图片打印出来的函数？

[mhycy]

貌似要调用打印机驱动。。。具体非常复杂，困难，麻烦。。。。

[hfeeki]

貌似不是很负责、困难、麻烦。。。 我已经知道怎样做了

[librehat]

用Qt吧，有现成函数库可以打印。QPrinter

[Comdex]

@hfeeki 请问一下楼主能分享一下吗

[loading]

LZ 没品

[hfeeki]

import win32print
import win32ui
from PIL import Image, ImageWin

#
# Constants for GetDeviceCaps
#
#
# HORZRES / VERTRES = printable area
#
HORZRES = 8
VERTRES = 10
#
# LOGPIXELS = dots per inch
#
LOGPIXELSX = 88
LOGPIXELSY = 90
#
# PHYSICALWIDTH/HEIGHT = total area
#
PHYSICALWIDTH = 110
PHYSICALHEIGHT = 111
#
# PHYSICALOFFSETX/Y = left / top margin
#
PHYSICALOFFSETX = 112
PHYSICALOFFSETY = 113

printer_name = win32print.GetDefaultPrinter ()
file_name = "test.jpg"

#
# You can only write a Device-independent bitmap
# directly to a Windows device context; therefore
# we need (for ease) to use the Python Imaging
# Library to manipulate the image.
#
# Create a device context from a named printer
# and assess the printable size of the paper.
#
hDC = win32ui.CreateDC ()
hDC.CreatePrinterDC (printer_name)
printable_area = hDC.GetDeviceCaps (HORZRES), hDC.GetDeviceCaps (VERTRES)
printer_size = hDC.GetDeviceCaps (PHYSICALWIDTH), hDC.GetDeviceCaps (PHYSICALHEIGHT)
printer_margins = hDC.GetDeviceCaps (PHYSICALOFFSETX), hDC.GetDeviceCaps (PHYSICALOFFSETY)

#
# Open the image, rotate it if it's wider than
# it is high, and work out how much to multiply
# each pixel by to get it as big as possible on
# the page without distorting.
#
bmp = Image.open (file_name)
if bmp.size[0] > bmp.size[1]:
bmp = bmp.rotate (90)

ratios = [1.0 * printable_area[0] / bmp.size[0], 1.0 * printable_area[1] / bmp.size[1]]
scale = min (ratios)

#
# Start the print job, and draw the bitmap to
# the printer device at the scaled size.
#
hDC.StartDoc (file_name)
hDC.StartPage ()

dib = ImageWin.Dib (bmp)
scaled_width, scaled_height = [int (scale * i) for i in bmp.size]
x1 = int ((printer_size[0] - scaled_width) / 2)
y1 = int ((printer_size[1] - scaled_height) / 2)
x2 = x1 + scaled_width
y2 = y1 + scaled_height
dib.draw (hDC.GetHandleOutput (), (x1, y1, x2, y2))

hDC.EndPage ()
hDC.EndDoc ()
hDC.DeleteDC ()

[tywtyw2002]

pdflatex。 然后用cups。
python生成一个latex脚本，运行下pdflatex编译，剩下的cmd call lpr去打印。
没想折腾cups api。
linux上面没问题。

以前做过一键重排版ppt，然后打印。